The function is  and the point is .

Apply derivative on each side with respect to .

Apply formula: .

.

Find slope at the point .

Slope of the tangent line is derivative of the function at given point.

Substitute  in .

.

Slope of a tangent line is .

Point-slope form of a line equation is .

Substitute  and in point-slope form.

.

The tangent line equation is .

Graph :

Graph the function and tangent line is :

The tangent line equation is .